Measuring blood flow in the brain is critical for responding to a range of neurological problems, including stroke, traumatic brain injury (TBI) and vascular dementia.

Editor’s Note: Subscribe to CNN’s Fitness, But Better newsletter. Sign up for our newsletter series to ease into a healthy routine, backed by experts. “My worry in the beginning of the study was ‘What ...

Proprioceptive neuromuscular facilitation (PNF) is a form of assisted stretching. It combines passive stretching with muscle contraction. First, your partner applies force to stretch your muscle ...